As the title says.
When this mod is enabled with Py coal processing a 32/64 icon size error is reported for sand.png
Disabling either mod allows the game to load.
I'm not sure if the cause is this mod or Py coal processing

It said that it asked for a 64 icon and it was out of bounds?

Enabling a stacking mod for Pyanadom should act as a temporary solution for the problem, if it stacks sand. If it doesn't, adding it to the list of my mod's optional dependencies should do the trick.

If you don't care to do some more advanced coding, you can copy what I did for glass and bobplates, in the data-final-fixes file.

Also, are you using stacking, crating, or both?

Both

To your suggestion of enabling stacking for pyanadons. When I do that I get the same error but for solid-coke.png from angel's petrochem

I'm excluding sand from the list of stacked items if pycoal is active. This should fix the sand issue.
The solid-coke.png has nothing to do with me, so I can't help with that.

I am now able to load the game with lots of mods WITH this mod installed. Thank you.

don't update deadlock for now, the update crashes my bridge. alternativly, you can implament the fix I'll put in my main page for yourself.